// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Coding of token probabilities, intra modes and segments.
//
// Author: Skal (pascal.massimino@gmail.com)

#include <string.h>

#include "src/dec/common_dec.h"
#include "src/enc/vp8i_enc.h"
#include "src/utils/bit_writer_utils.h"
#include "src/webp/types.h"

//------------------------------------------------------------------------------
// Default probabilities

// Paragraph 13.5
const uint8_t VP8CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
    {{{128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128},
      {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128},
      {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}},
     {{253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128},
      {189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128},
      {106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128}},
     {
         {1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128},
         {181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128},
         {78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128},
     },
     {
         {1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128},
         {184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128},
         {77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128},
     },
     {{1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128},
      {170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128},
      {37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128}},
     {{1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128},
      {207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128},
      {102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128}},
     {{1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128},
      {177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128},
      {80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128}},
     {{1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128},
      {246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128},
      {255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}}},
    {{{198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62},
      {131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1},
      {68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128}},
     {{1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128},
      {184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128},
      {81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128}},
     {{1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128},
      {99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128},
      {23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128}},
     {{1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128},
      {109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128},
      {44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128}},
     {{1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128},
      {94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128},
      {22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128}},
     {{1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128},
      {124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128},
      {35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128}},
     {{1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128},
      {121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128},
      {45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128}},
     {{1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128},
      {203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128},
      {137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128}}},
    {{{253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128},
      {175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128},
      {73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128}},
     {{1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128},
      {239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128},
      {155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128}},
     {{1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128},
      {201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128},
      {69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128}},
     {{1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128},
      {223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128},
      {141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128}},
     {{1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128},
      {190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128},
      {149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}},
     {{1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128},
      {247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128},
      {240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128}},
     {{1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128},
      {213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128},
      {55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128}},
     {{128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128},
      {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128},
      {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}}},
    {{{202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255},
      {126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128},
      {61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128}},
     {{1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128},
      {166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128},
      {39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128}},
     {{1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128},
      {124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128},
      {24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128}},
     {{1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128},
      {149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128},
      {28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128}},
     {{1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128},
      {123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128},
      {20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128}},
     {{1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128},
      {168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128},
      {47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128}},
     {{1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128},
      {141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128},
      {42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128}},
     {{1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128},
      {244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128},
      {238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}}}};

void VP8DefaultProbas(VP8Encoder* const enc) {
  VP8EncProba* const probas = &enc->proba;
  probas->use_skip_proba = 0;
  memset(probas->segments, 255u, sizeof(probas->segments));
  memcpy(probas->coeffs, VP8CoeffsProba0, sizeof(VP8CoeffsProba0));
  // Note: we could hard-code the level_costs corresponding to VP8CoeffsProba0,
  // but that's ~11k of static data. Better call VP8CalculateLevelCosts() later.
  probas->dirty = 1;
}

// Paragraph 11.5.  900bytes.
static const uint8_t kBModesProba[NUM_BMODES][NUM_BMODES][NUM_BMODES - 1] = {
    {{231, 120, 48, 89, 115, 113, 120, 152, 112},
     {152, 179, 64, 126, 170, 118, 46, 70, 95},
     {175, 69, 143, 80, 85, 82, 72, 155, 103},
     {56, 58, 10, 171, 218, 189, 17, 13, 152},
     {114, 26, 17, 163, 44, 195, 21, 10, 173},
     {121, 24, 80, 195, 26, 62, 44, 64, 85},
     {144, 71, 10, 38, 171, 213, 144, 34, 26},
     {170, 46, 55, 19, 136, 160, 33, 206, 71},
     {63, 20, 8, 114, 114, 208, 12, 9, 226},
     {81, 40, 11, 96, 182, 84, 29, 16, 36}},
    {{134, 183, 89, 137, 98, 101, 106, 165, 148},
     {72, 187, 100, 130, 157, 111, 32, 75, 80},
     {66, 102, 167, 99, 74, 62, 40, 234, 128},
     {41, 53, 9, 178, 241, 141, 26, 8, 107},
     {74, 43, 26, 146, 73, 166, 49, 23, 157},
     {65, 38, 105, 160, 51, 52, 31, 115, 128},
     {104, 79, 12, 27, 217, 255, 87, 17, 7},
     {87, 68, 71, 44, 114, 51, 15, 186, 23},
     {47, 41, 14, 110, 182, 183, 21, 17, 194},
     {66, 45, 25, 102, 197, 189, 23, 18, 22}},
    {{88, 88, 147, 150, 42, 46, 45, 196, 205},
     {43, 97, 183, 117, 85, 38, 35, 179, 61},
     {39, 53, 200, 87, 26, 21, 43, 232, 171},
     {56, 34, 51, 104, 114, 102, 29, 93, 77},
     {39, 28, 85, 171, 58, 165, 90, 98, 64},
     {34, 22, 116, 206, 23, 34, 43, 166, 73},
     {107, 54, 32, 26, 51, 1, 81, 43, 31},
     {68, 25, 106, 22, 64, 171, 36, 225, 114},
     {34, 19, 21, 102, 132, 188, 16, 76, 124},
     {62, 18, 78, 95, 85, 57, 50, 48, 51}},
    {{193, 101, 35, 159, 215, 111, 89, 46, 111},
     {60, 148, 31, 172, 219, 228, 21, 18, 111},
     {112, 113, 77, 85, 179, 255, 38, 120, 114},
     {40, 42, 1, 196, 245, 209, 10, 25, 109},
     {88, 43, 29, 140, 166, 213, 37, 43, 154},
     {61, 63, 30, 155, 67, 45, 68, 1, 209},
     {100, 80, 8, 43, 154, 1, 51, 26, 71},
     {142, 78, 78, 16, 255, 128, 34, 197, 171},
     {41, 40, 5, 102, 211, 183, 4, 1, 221},
     {51, 50, 17, 168, 209, 192, 23, 25, 82}},
    {{138, 31, 36, 171, 27, 166, 38, 44, 229},
     {67, 87, 58, 169, 82, 115, 26, 59, 179},
     {63, 59, 90, 180, 59, 166, 93, 73, 154},
     {40, 40, 21, 116, 143, 209, 34, 39, 175},
     {47, 15, 16, 183, 34, 223, 49, 45, 183},
     {46, 17, 33, 183, 6, 98, 15, 32, 183},
     {57, 46, 22, 24, 128, 1, 54, 17, 37},
     {65, 32, 73, 115, 28, 128, 23, 128, 205},
     {40, 3, 9, 115, 51, 192, 18, 6, 223},
     {87, 37, 9, 115, 59, 77, 64, 21, 47}},
    {{104, 55, 44, 218, 9, 54, 53, 130, 226},
     {64, 90, 70, 205, 40, 41, 23, 26, 57},
     {54, 57, 112, 184, 5, 41, 38, 166, 213},
     {30, 34, 26, 133, 152, 116, 10, 32, 134},
     {39, 19, 53, 221, 26, 114, 32, 73, 255},
     {31, 9, 65, 234, 2, 15, 1, 118, 73},
     {75, 32, 12, 51, 192, 255, 160, 43, 51},
     {88, 31, 35, 67, 102, 85, 55, 186, 85},
     {56, 21, 23, 111, 59, 205, 45, 37, 192},
     {55, 38, 70, 124, 73, 102, 1, 34, 98}},
    {{125, 98, 42, 88, 104, 85, 117, 175, 82},
     {95, 84, 53, 89, 128, 100, 113, 101, 45},
     {75, 79, 123, 47, 51, 128, 81, 171, 1},
     {57, 17, 5, 71, 102, 57, 53, 41, 49},
     {38, 33, 13, 121, 57, 73, 26, 1, 85},
     {41, 10, 67, 138, 77, 110, 90, 47, 114},
     {115, 21, 2, 10, 102, 255, 166, 23, 6},
     {101, 29, 16, 10, 85, 128, 101, 196, 26},
     {57, 18, 10, 102, 102, 213, 34, 20, 43},
     {117, 20, 15, 36, 163, 128, 68, 1, 26}},
    {{102, 61, 71, 37, 34, 53, 31, 243, 192},
     {69, 60, 71, 38, 73, 119, 28, 222, 37},
     {68, 45, 128, 34, 1, 47, 11, 245, 171},
     {62, 17, 19, 70, 146, 85, 55, 62, 70},
     {37, 43, 37, 154, 100, 163, 85, 160, 1},
     {63, 9, 92, 136, 28, 64, 32, 201, 85},
     {75, 15, 9, 9, 64, 255, 184, 119, 16},
     {86, 6, 28, 5, 64, 255, 25, 248, 1},
     {56, 8, 17, 132, 137, 255, 55, 116, 128},
     {58, 15, 20, 82, 135, 57, 26, 121, 40}},
    {{164, 50, 31, 137, 154, 133, 25, 35, 218},
     {51, 103, 44, 131, 131, 123, 31, 6, 158},
     {86, 40, 64, 135, 148, 224, 45, 183, 128},
     {22, 26, 17, 131, 240, 154, 14, 1, 209},
     {45, 16, 21, 91, 64, 222, 7, 1, 197},
     {56, 21, 39, 155, 60, 138, 23, 102, 213},
     {83, 12, 13, 54, 192, 255, 68, 47, 28},
     {85, 26, 85, 85, 128, 128, 32, 146, 171},
     {18, 11, 7, 63, 144, 171, 4, 4, 246},
     {35, 27, 10, 146, 174, 171, 12, 26, 128}},
    {{190, 80, 35, 99, 180, 80, 126, 54, 45},
     {85, 126, 47, 87, 176, 51, 41, 20, 32},
     {101, 75, 128, 139, 118, 146, 116, 128, 85},
     {56, 41, 15, 176, 236, 85, 37, 9, 62},
     {71, 30, 17, 119, 118, 255, 17, 18, 138},
     {101, 38, 60, 138, 55, 70, 43, 26, 142},
     {146, 36, 19, 30, 171, 255, 97, 27, 20},
     {138, 45, 61, 62, 219, 1, 81, 188, 64},
     {32, 41, 20, 117, 151, 142, 20, 21, 163},
     {112, 19, 12, 61, 195, 128, 48, 4, 24}}};

static int PutI4Mode(VP8BitWriter* const bw, int mode,
                     const uint8_t* const prob) {
  if (VP8PutBit(bw, mode != B_DC_PRED, prob[0])) {
    if (VP8PutBit(bw, mode != B_TM_PRED, prob[1])) {
      if (VP8PutBit(bw, mode != B_VE_PRED, prob[2])) {
        if (!VP8PutBit(bw, mode >= B_LD_PRED, prob[3])) {
          if (VP8PutBit(bw, mode != B_HE_PRED, prob[4])) {
            VP8PutBit(bw, mode != B_RD_PRED, prob[5]);
          }
        } else {
          if (VP8PutBit(bw, mode != B_LD_PRED, prob[6])) {
            if (VP8PutBit(bw, mode != B_VL_PRED, prob[7])) {
              VP8PutBit(bw, mode != B_HD_PRED, prob[8]);
            }
          }
        }
      }
    }
  }
  return mode;
}

static void PutI16Mode(VP8BitWriter* const bw, int mode) {
  if (VP8PutBit(bw, (mode == TM_PRED || mode == H_PRED), 156)) {
    VP8PutBit(bw, mode == TM_PRED, 128);  // TM or HE
  } else {
    VP8PutBit(bw, mode == V_PRED, 163);  // VE or DC
  }
}

static void PutUVMode(VP8BitWriter* const bw, int uv_mode) {
  if (VP8PutBit(bw, uv_mode != DC_PRED, 142)) {
    if (VP8PutBit(bw, uv_mode != V_PRED, 114)) {
      VP8PutBit(bw, uv_mode != H_PRED, 183);  // else: TM_PRED
    }
  }
}

static void PutSegment(VP8BitWriter* const bw, int s, const uint8_t* p) {
  if (VP8PutBit(bw, s >= 2, p[0])) p += 1;
  VP8PutBit(bw, s & 1, p[1]);
}

void VP8CodeIntraModes(VP8Encoder* const enc) {
  VP8BitWriter* const bw = &enc->bw;
  VP8EncIterator it;
  VP8IteratorInit(enc, &it);
  do {
    const VP8MBInfo* const mb = it.mb;
    const uint8_t* preds = it.preds;
    if (enc->segment_hdr.update_map) {
      PutSegment(bw, mb->segment, enc->proba.segments);
    }
    if (enc->proba.use_skip_proba) {
      VP8PutBit(bw, mb->skip, enc->proba.skip_proba);
    }
    if (VP8PutBit(bw, (mb->type != 0), 145)) {  // i16x16
      PutI16Mode(bw, preds[0]);
    } else {
      const int preds_w = enc->preds_w;
      const uint8_t* top_pred = preds - preds_w;
      int x, y;
      for (y = 0; y < 4; ++y) {
        int left = preds[-1];
        for (x = 0; x < 4; ++x) {
          const uint8_t* const probas = kBModesProba[top_pred[x]][left];
          left = PutI4Mode(bw, preds[x], probas);
        }
        top_pred = preds;
        preds += preds_w;
      }
    }
    PutUVMode(bw, mb->uv_mode);
  } while (VP8IteratorNext(&it));
}

//------------------------------------------------------------------------------
// Paragraph 13

const uint8_t VP8CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] =
    {{{{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255},
       {249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255},
       {234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255},
       {250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255},
       {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}}},
     {{{217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255},
       {234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255}},
      {{255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255},
       {250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}}},
     {{{186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255},
       {234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255},
       {251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255}},
      {{255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255}},
      {{255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}}},
     {{{248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255},
       {248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255},
       {246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255},
       {252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255}},
      {{255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255},
       {248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255},
       {253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255},
       {252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255},
       {250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}},
      {{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
       {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}}}};

void VP8WriteProbas(VP8BitWriter* const bw, const VP8EncProba* const probas) {
  int t, b, c, p;
  for (t = 0; t < NUM_TYPES; ++t) {
    for (b = 0; b < NUM_BANDS; ++b) {
      for (c = 0; c < NUM_CTX; ++c) {
        for (p = 0; p < NUM_PROBAS; ++p) {
          const uint8_t p0 = probas->coeffs[t][b][c][p];
          const int update = (p0 != VP8CoeffsProba0[t][b][c][p]);
          if (VP8PutBit(bw, update, VP8CoeffsUpdateProba[t][b][c][p])) {
            VP8PutBits(bw, p0, 8);
          }
        }
      }
    }
  }
  if (VP8PutBitUniform(bw, probas->use_skip_proba)) {
    VP8PutBits(bw, probas->skip_proba, 8);
  }
}
